Induction Hardening Cast Iron With High Frequency Induction Heating Machinery
Objective Heat cast iron pulleys to 1600ºF(871.1ºC) in order to achieve a hardness of 55 Rockwell C. Material Ductile Iron Pulleys measuring 3 1/2"(88.9mm) OD and 2" (50.8mm) high. Temperature 1600ºF (871.1ºC) Frequency 164 kHz Equipment • DW-UHF-10kW induction heating system equipped with a remote workhead containing eight (8) capacitors totaling 0.66 μF • An induction heating coil designed and developed specifically for this application. Process A four turn helical coil is used to heat the cast iron pulley for 2 minutes and 45 seconds to reach the required 1600ºF (871.1ºC) Immediately following, the pulley is quenched in an agitated water bath to achieve the desired hardness. Results/Benefits Induction heating provides: • Increased production • Repeatable, non-contact and energy efficient heat • Precise heating
